Lubricant-nipple



N. W. CUMMINS. LUBRICANT NIPPLE. APPLICATION mp0 MAR. 25. mm

/ Patented Sept. 27, 1921 NORMAN W. CUMMINS, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR; T0 THE BASSICK COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LUBRICANT-NIIPPLE.

Specification of Letters .Patent.

Patented Sept. 27,. 1921.

Application filed March 26, 1921. Serial No. 455,731.

a citizen of the United States, residing atthe city of Bridgeport, in the county of F airfield and State of Connecticut, have invented certain new and useful Improvements in Lubricant-Nipples; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which-it appertains to make and use the same.

This invention relates to certain new and useful improvements in grease cups and the primary object thereof is to provide a grease cup which has means to enable filling thereof with-a grease gun, and wherein the cap or or cover cannot be removed.

'A further object of'the invention is to PI'OVlClO a grease cup in which the clamping means for the packing ring and for the spider of the lead screw is formed integral with the cup properand in which the same means is'employed to secure both the spider and the packing ring in clamped position.

A still further object of the invention is to provide a grease cup structure with an improved packing ring, which latter the nonremovable cap assures against grease contacting with the effective face thereof by preventing exposure of the ring.

The invention still further aims to provide a lead screw-which is formed to receive a controlling valve for the grease cup by means of which the cup may be filled.

Other and further objects will be later set forth and manifested in the course of the following description.

In the drawings:

Figure 1, is a vertical sectional view of the invention;

Fig. 2, is a section on line 3-3 of Fig. 1;

Fig. 3, is a top plan view of the lead screw, and

Fig. 4, is a section on line 4-4 of Fig. 1.

upwardly at 8 to form in conjunction with the inbent part 7, a seat i'orfa packing'ring 9. The free'edge of the upwardly extending part 8 is then bent outwardly anddown-. wa-rdly at 8' .to engage on top of the packing ring 9 to firmly hold the latter to its seat. The part 8, acts as an abutment preventing inward movement of the packing ring. lt

will thus be apparent that the upper end of the body provides a double. clamp, 91. 6., it holds the spider and the packing ring each in clamped position.

' The packing ring is made of leather and is of L-cross-section, its free upper edge being beveled inwardly and downwardly at 9 so as to act to cut or wipe the grease from the inner wall of the cap 10 to thus prevent the grease from contacting with the effective,

part or the face of the rlng. I

The cap lOhas a hollow'central topconnection 11 formed for engagement with a grease gun andfurther has an inlet 12 controlled by a spring pressed valve 13. The valve 1.3 extends within a chamber 14 formed in the enlarged upper end of a lead screw 15, the latter being threaded through the sleeve or nut portion 6 and having its lower end headed or upset at 16 to thereby prevent. withdrawal of the lead screw from the spider and consequent removal of the cap 10 from the body. The lead screw is suitably connected to'the cap, for example by means of the threads shown at 17 and its chamber;

14 is formed with a series of grease openings 18 which affordinlet's for the grease into the cap 10.

In operation, the grease gun (not shown) is provided with a suitable socket to receive the connection 11, and is actuated to force grease past the valve12, throughchamber 14. and openings 18 to enter the cap, thelatter being initially moved to the up position of Fig. 1. After filling of the cap, the gun is removed and the valve 12 returns to the seated position of Fig. l. The cap'may be 5 In proceeding in accordance with the p I now turned as desired or found necessary present invention, a body 1 is employed having the usual threaded nipple 2 at its lower end and having its upper end turned out wardly to form a seat 3 for a spider 4. The spider 4 has a series of grease openings 5 and a central interiorly threaded depending sleeve 6. The upper end of the body 1, is bent inwardly at 7 and superimposed upon the spider 4 to firmly hold the latter in fixed position on its seat and is then further bent vents removal of the cap, thereby avoiding the ingress of grit and loosening of the parts .resulting in leakage, which has been found to result in cases where the cap is removed and applied periodically.

The l..- shapc of the packing ring gives 21. i1() long flexible bearing against the cap and since the latter cannot be removed, grease cannot be brought into contact with the effective 'u )wardl bent )art havin its free end part I y g bent downward y to clamp the packing ring onto its seat, a cap engaged over the packin ring, and a lead screw borne by the cap and threaded through the spider.

2. In a-gr'ease cup, a body having a seat, a spider on the seat, the body having its upper. end bent to clamp the spider onto its seat and to form a second seat, apacking ring on the second .seat, said upper end of the body being further bent to clamp said ring on said second seat, a cap engaged over and with the packing, and alead screw borne by the cap and threaded through the spider.

In a grease cup, a body: having a seat, a spider therein, said body being bent to clamp the spider-onto its seat, a packing ring, said body being further bent to clamp the packing ring thereto', acap engaged over the packing ring, and a lead screw borne by'the cap and threaded through the spider.

4. In a grease cup, a body, a spider rigidly mounted therein, a cap on the body, a lead screw connected to the cap and threadedthrough the spider, said screw having its upper end formed with a grease inlet, and a spring controlled valve for said inlet borne by the lead screw.

5. In a grease cup, a b0dy,-an L-shaped packing ring borne by the body, means to secure the base of the ring to the body, a cap engaged over the vertical part of the ring, a lead screw borne by the cap, means borne by the body to engage the screw so that upon rotation of the ca the latter will move downwardly on the b0 y, and means to prevent removal of'the cap from the body.

6. In a grease cup, a body, a packing rin borne by the body and having a long vertical part, a cap engaged over sa1d vertical part,

screw connected to the cap, and a nut part in the body to enga e the lead screw, the lead screw being hea ed to engage the nut part to prevent removal of the cap.

In a grease gun, a body, a spider, a

a lead packing ring, means integral with the body to clamp the spider and ring thereto, a cap engaged with the packing ring, and a lead screw connected to the cap and having threaded engagement with the spider.

8. In a grease cup, a body, a spider clamped within said body, a, packing ring likewise clamped within said body, the clamping means for said spider and rin being integral with the body, a cap engage over and with said packing rin and a lead screw rigidly connected to t e cap and threaded through the spider, said cap having an inlet with a spring controlled valve as the sOle means for introducing grease within the cup. v

In testimony whereof I aflix my signature hereto.

NORMAN W. .CUMMINS. 

